1066

http://www.channel4.com/history/microsites/0-9/1066/game/index.html
A historical strategy game detailing the events in England in 1066. You can play a short (3 battles only) campaign against the computer. Here you'll learn something about history and find a feel for the mechanics. Then you can either play skirmish battles or fight against other players.
Little Wheel

http://fastgames.com/littlewheel.html
Little Wheel is a small adventure game with a charming art style and goregous animations. Taking control of the sole active robot in a world of metal it's your task to reactivate the generator to bring life back to all machines.
Closure

http://www.kongregate.com/games/GlaielGamer/closure
Very interesting game about lights. Carry one and illuminate your surrounding to find new pathways. But be careful or you'll stumble into darkness very quickly! :)
Bug War

http://www.kongregate.com/games/rudy_sudarto/bug-war
A neat little game about larves and instects, that uses tower assult as a base for a strategic territorial control gameplay mechanism. Easy to learn, fun to play.
Strawhead Samurai

http://de.bigpoint.com/mini-games/388/Strawhead-Samurai/
Strawhead samurai is a fighting game where you, as a lone samurai, have to fight an invading army. The main mechanic is slicing by painting lines with the mouse. It's a pretty cool idea and works surprisingly well. The game's a short campaign with a lot of action and some strategy at the end. It's a neat little package that should occupy you for 10 minutes or so. Give it a try.

